Clock signal generating system

Details Clock signal generating system Clock signal generating system

1998-02-20

2000-06-27

Tran, Thang V.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369 48, G11B 509

Patent

active

06081490&

ABSTRACT:
A clock signal generating system of the present invention is provided for recording information on a disc. The disc has a plurality of recording tracks wobbled by a wobble signal having a predetermined frequency and a plurality of prepits disposed at positions having a predetermined phase relation with respect to a phase of the wobble signal. A clock signal is generated based on the wobble signal. A prepit signal is produced from the prepit. The phase of the wobble signal is compared with a phase of the prepit signal, thereby generating a phase adjusting signal. The phase of the clock signal is adjusted based on the phase adjusting signal. A recording clock signal for recording the information is produced by an adjusted clock signal.

REFERENCES:
patent: 5377178 (1994-12-01), Suito et al.
patent: 5852599 (1998-12-01), Fuji
patent: 5943313 (1999-08-01), Ando et al.
patent: 5953297 (1999-09-01), Maeda et al.
patent: 5978333 (1999-11-01), Kobayashi et al.

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